Lemon juice is another natural acid that cuts through hard water buildup like a charm. It’s also smells way better than vinegar—more lemonade, less pickles.
How to Remove Hard Water & Chlorine Build Up from Natural Hair
Squeeze half a lemon into a cup of water and mix well. After shampooing, pour it over your hair and let it sit for 2 minutes, then rinse thoroughly.
Just don’t use this if you have a sensitive scalp—lemon can sting. And please, for the love of all things good, avoid direct sunlight after the rinse, or you might end up with accidental highlights!